EvoApprox8B

% This code is a part of EvoApproxLib library (ehw.fit.vutbr.cz/approxlib) distributed under The MIT License.
% When used, please cite the following article(s): V. Mrazek, R. Hrbacek, Z. Vasicek and L. Sekanina, "EvoApprox8b: Library of approximate adders and multipliers for circuit design and benchmarking of approximation methods". Design, Automation & Test in Europe Conference & Exhibition (DATE), 2017, Lausanne, 2017, pp. 258-261. doi: 10.23919/DATE.2017.7926993 
% This file contains a circuit from evoapprox8b dataset. Note that a new version of library was already published.

function [ c ] = mul8_493( a, b )
% Approximate function mul8_493
%  Library = EvoApprox8b
%  Circuit = mul8_493
%  Area   (180) = 7356
%  Delay  (180) = 3.520
%  Power  (180) = 3409.40
%  Area   (45) = 532
%  Delay  (45) = 1.300
%  Power  (45) = 294.90
%  Nodes = 120
%  HD = 297772
%  MAE = 176.87521
%  MSE = 54867.68164
%  MRE = 4.22 %
%  WCE = 990
%  WCRE = 100 %
%  EP = 96.8 %
  a = uint16(a);
  b = uint16(b);
  c = 0;
  n0 = bitand(bitshift(a, -0), 1, 'uint16');
  n2 = bitand(bitshift(a, -1), 1, 'uint16');
  n4 = bitand(bitshift(a, -2), 1, 'uint16');
  n6 = bitand(bitshift(a, -3), 1, 'uint16');
  n8 = bitand(bitshift(a, -4), 1, 'uint16');
  n10 = bitand(bitshift(a, -5), 1, 'uint16');
  n12 = bitand(bitshift(a, -6), 1, 'uint16');
  n14 = bitand(bitshift(a, -7), 1, 'uint16');
  n16 = bitand(bitshift(b, -0), 1, 'uint16');
  n18 = bitand(bitshift(b, -1), 1, 'uint16');
  n20 = bitand(bitshift(b, -2), 1, 'uint16');
  n22 = bitand(bitshift(b, -3), 1, 'uint16');
  n24 = bitand(bitshift(b, -4), 1, 'uint16');
  n26 = bitand(bitshift(b, -5), 1, 'uint16');
  n28 = bitand(bitshift(b, -6), 1, 'uint16');
  n30 = bitand(bitshift(b, -7), 1, 'uint16');
  n32 = bitand(n18, n12);
  n33 = bitand(n18, n12);
  n35 = bitcmp(bitand(n30, bitand(n12, n10)));
  n41 = bitcmp(bitor(n18, bitor(n12, n35)));
  n45 = bitor(bitor(bitand(n18, n20), bitand(n20, n35)), bitand(n18, n35));
  n46 = bitand(n33, n12);
  n47 = bitand(n33, n12);
  n54 = bitcmp(bitand(n22, n46));
  n55 = bitcmp(bitand(n22, n46));
  n70 = n47;
  n76 = bitcmp(bitor(n18, n54));
  n77 = bitcmp(bitor(n18, n54));
  n83 = bitcmp(n45);
  n106 = bitand(n10, n70);
  n121 = bitand(n12, n16);
  n134 = bitand(n14, n16);
  n138 = n41;
  n139 = n41;
  n141 = bitcmp(bitor(n26, bitor(n70, n55)));
  n193 = bitcmp(bitor(bitand(n18, n12), n83));
  n224 = bitand(n10, n18);
  n238 = bitand(n12, n18);
  n254 = bitand(n77, n32);
  n343 = bitand(n10, n20);
  n356 = bitand(n12, n20);
  n372 = bitand(n14, n20);
  n373 = bitand(n14, n20);
  n432 = bitand(n6, n22);
  n446 = bitand(n8, n22);
  n460 = bitand(n10, n22);
  n476 = bitand(n12, n22);
  n490 = bitand(n14, n22);
  n533 = bitand(n193, n4);
  n534 = bitand(n4, n24);
  n550 = bitand(n6, n24);
  n564 = bitand(n8, n24);
  n566 = n141;
  n580 = bitand(n10, n24);
  n581 = bitand(n10, n24);
  n594 = bitand(n12, n24);
  n608 = bitand(n14, n24);
  n654 = bitand(n4, n26);
  n668 = bitand(n6, n26);
  n682 = bitand(n8, n26);
  n686 = n139;
  n698 = bitand(n10, n26);
  n712 = bitand(n12, n26);
  n728 = bitand(n14, n26);
  n729 = bitand(n14, n26);
  n756 = bitand(n2, n138);
  n772 = bitand(n4, n28);
  n786 = bitand(n6, n28);
  n802 = bitand(n8, n28);
  n816 = bitand(n10, n28);
  n832 = bitand(n12, n28);
  n846 = bitand(n14, n28);
  n860 = bitand(n0, n30);
  n876 = bitand(n2, n30);
  n890 = bitand(n4, n30);
  n906 = bitand(n6, n30);
  n920 = bitand(n8, n30);
  n934 = bitand(n10, n30);
  n950 = bitand(n12, n30);
  n964 = bitand(n14, n30);
  n980 = n46;
  n1009 = bitor(bitand(n83, n566), bitand(bitcmp(n83), n76));
  n1038 = bitcmp(bitand(n106, n16));
  n1054 = bitor(n121, n224);
  n1055 = bitor(n121, n224);
  n1068 = bitxor(bitxor(n134, n238), n343);
  n1069 = bitor(bitor(bitand(n134, n238), bitand(n238, n343)), bitand(n134, n343));
  n1082 = bitand(n254, n356);
  n1098 = bitxor(n254, n356);
  n1143 = bitxor(n432, n534);
  n1156 = bitxor(bitxor(n446, n550), n654);
  n1157 = bitor(bitor(bitand(n446, n550), bitand(n550, n654)), bitand(n446, n654));
  n1172 = bitxor(bitxor(n460, n564), n668);
  n1173 = bitor(bitor(bitand(n460, n564), bitand(n564, n668)), bitand(n460, n668));
  n1186 = bitxor(bitxor(n476, n580), n682);
  n1187 = bitor(bitor(bitand(n476, n580), bitand(n580, n682)), bitand(n476, n682));
  n1202 = bitxor(bitxor(n490, n594), n698);
  n1203 = bitor(bitor(bitand(n490, n594), bitand(n594, n698)), bitand(n490, n698));
  n1232 = bitxor(n608, n712);
  n1233 = bitand(n608, n712);
  n1246 = n533;
  n1260 = bitand(n373, n1082);
  n1276 = bitand(n581, n1009);
  n1277 = bitand(n581, n1009);
  n1291 = n1038;
  n1306 = bitand(n1054, n686);
  n1320 = bitxor(bitxor(n1068, n1055), n1156);
  n1321 = bitor(bitor(bitand(n1068, n1055), bitand(n1055, n1156)), bitand(n1068, n1156));
  n1334 = bitxor(bitxor(n1098, n1069), n1172);
  n1335 = bitor(bitor(bitand(n1098, n1069), bitand(n1069, n1172)), bitand(n1098, n1172));
  n1350 = bitxor(bitxor(n372, n1082), n1186);
  n1351 = bitor(bitor(bitand(n372, n1082), bitand(n1082, n1186)), bitand(n372, n1186));
  n1380 = bitxor(bitxor(n1143, n756), n860);
  n1381 = bitor(bitor(bitand(n1143, n756), bitand(n756, n860)), bitand(n1143, n860));
  n1394 = bitxor(bitxor(n1157, n772), n876);
  n1395 = bitor(bitor(bitand(n1157, n772), bitand(n772, n876)), bitand(n1157, n876));
  n1408 = bitxor(bitxor(n1173, n786), n890);
  n1409 = bitor(bitor(bitand(n1173, n786), bitand(n786, n890)), bitand(n1173, n890));
  n1424 = bitxor(bitxor(n1187, n802), n906);
  n1425 = bitor(bitor(bitand(n1187, n802), bitand(n802, n906)), bitand(n1187, n906));
  n1438 = bitxor(bitxor(n1203, n816), n920);
  n1439 = bitor(bitor(bitand(n1203, n816), bitand(n816, n920)), bitand(n1203, n920));
  n1454 = bitxor(bitxor(n1233, n832), n934);
  n1455 = bitor(bitor(bitand(n1233, n832), bitand(n832, n934)), bitand(n1233, n934));
  n1468 = bitand(n846, n950);
  n1482 = bitxor(n846, n950);
  n1498 = n1260;
  n1513 = n1276;
  n1529 = bitand(n729, n1277);
  n1542 = bitand(n1306, n1291);
  n1543 = bitand(n1306, n1291);
  n1556 = bitxor(bitxor(n1320, n1082), n1380);
  n1557 = bitor(bitor(bitand(n1320, n1082), bitand(n1082, n1380)), bitand(n1320, n1380));
  n1572 = bitxor(bitxor(n1334, n1321), n1394);
  n1573 = bitor(bitor(bitand(n1334, n1321), bitand(n1321, n1394)), bitand(n1334, n1394));
  n1586 = bitxor(bitxor(n1350, n1335), n1408);
  n1587 = bitor(bitor(bitand(n1350, n1335), bitand(n1335, n1408)), bitand(n1350, n1408));
  n1602 = bitxor(bitxor(n1202, n1351), n1424);
  n1603 = bitor(bitor(bitand(n1202, n1351), bitand(n1351, n1424)), bitand(n1202, n1424));
  n1616 = bitand(n1232, n1438);
  n1632 = bitxor(n1232, n1438);
  n1646 = bitand(n728, n1454);
  n1660 = bitxor(n728, n1454);
  n1676 = n1529;
  n1677 = n1529;
  n1690 = bitxor(n343, n1513);
  n1691 = bitand(n343, n1513);
  n1706 = bitxor(n1542, n1529);
  n1707 = bitand(n1542, n1529);
  n1720 = bitxor(n1556, n1543);
  n1721 = bitand(n1556, n1543);
  n1734 = bitxor(bitxor(n1572, n1557), n1381);
  n1735 = bitor(bitor(bitand(n1572, n1557), bitand(n1557, n1381)), bitand(n1572, n1381));
  n1750 = bitxor(bitxor(n1586, n1573), n1395);
  n1751 = bitor(bitor(bitand(n1586, n1573), bitand(n1573, n1395)), bitand(n1586, n1395));
  n1764 = bitxor(bitxor(n1602, n1587), n1409);
  n1765 = bitor(bitor(bitand(n1602, n1587), bitand(n1587, n1409)), bitand(n1602, n1409));
  n1780 = bitxor(bitxor(n1632, n1603), n1425);
  n1781 = bitor(bitor(bitand(n1632, n1603), bitand(n1603, n1425)), bitand(n1632, n1425));
  n1794 = bitxor(bitxor(n1660, n1616), n1439);
  n1795 = bitor(bitor(bitand(n1660, n1616), bitand(n1616, n1439)), bitand(n1660, n1439));
  n1808 = bitxor(bitxor(n1482, n1646), n1455);
  n1809 = bitor(bitor(bitand(n1482, n1646), bitand(n1646, n1455)), bitand(n1482, n1455));
  n1824 = bitand(n964, n1468);
  n1838 = bitxor(n964, n1468);
  n1854 = bitxor(n1690, n1677);
  n1869 = bitor(bitor(bitand(n1706, n1691), bitand(n1691, n35)), bitand(n1706, n35));
  n1882 = bitxor(bitxor(n1720, n1707), n1869);
  n1898 = bitxor(n1734, n1721);
  n1899 = bitand(n1734, n1721);
  n1912 = bitxor(bitxor(n1750, n1735), n1899);
  n1913 = bitor(bitor(bitand(n1750, n1735), bitand(n1735, n1899)), bitand(n1750, n1899));
  n1928 = bitxor(bitxor(n1764, n1751), n1913);
  n1929 = bitor(bitor(bitand(n1764, n1751), bitand(n1751, n1913)), bitand(n1764, n1913));
  n1942 = bitxor(bitxor(n1780, n1765), n1929);
  n1943 = bitor(bitor(bitand(n1780, n1765), bitand(n1765, n1929)), bitand(n1780, n1929));
  n1956 = bitxor(bitxor(n1794, n1781), n1943);
  n1957 = bitor(bitor(bitand(n1794, n1781), bitand(n1781, n1943)), bitand(n1794, n1943));
  n1972 = bitxor(bitxor(n1808, n1795), n1957);
  n1973 = bitor(bitor(bitand(n1808, n1795), bitand(n1795, n1957)), bitand(n1808, n1957));
  n1986 = bitxor(bitxor(n1838, n1809), n1973);
  n1987 = bitor(bitor(bitand(n1838, n1809), bitand(n1809, n1973)), bitand(n1838, n1973));
  n2016 = bitor(n1824, n1987);
  c = bitor(c, bitshift(bitand(n32, 1), 0));
  c = bitor(c, bitshift(bitand(n980, 1), 1));
  c = bitor(c, bitshift(bitand(n1246, 1), 2));
  c = bitor(c, bitshift(bitand(n1498, 1), 3));
  c = bitor(c, bitshift(bitand(n1676, 1), 4));
  c = bitor(c, bitshift(bitand(n1854, 1), 5));
  c = bitor(c, bitshift(bitand(n1943, 1), 6));
  c = bitor(c, bitshift(bitand(n1882, 1), 7));
  c = bitor(c, bitshift(bitand(n1898, 1), 8));
  c = bitor(c, bitshift(bitand(n1912, 1), 9));
  c = bitor(c, bitshift(bitand(n1928, 1), 10));
  c = bitor(c, bitshift(bitand(n1942, 1), 11));
  c = bitor(c, bitshift(bitand(n1956, 1), 12));
  c = bitor(c, bitshift(bitand(n1972, 1), 13));
  c = bitor(c, bitshift(bitand(n1986, 1), 14));
  c = bitor(c, bitshift(bitand(n2016, 1), 15));
end